Systematic description of nuclear electric quadrupole moments
Systematic description of nuclear electric quadrupole moments
复制标题
核电四极矩的系统描述
DOI：
10.1088/1674-1137/42/12/124105
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Hou-Bing Zhou
中科院分区：
文献类型：
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作者：
Xiao-Jun Sun;Chun-Xing Chen;Ning Wang;Hou-Bing Zhou
核电四极矩是研究原子核形变的基本物理量之一。测量的NQM的数量明显少于已知的质量，仍然没有一个全局的NQM公式为所有的束缚核。在本文中，我们提出了一个解析公式，它包括壳修正，这是函数的电荷数，质量数，自旋，电荷半径，和核变形，计算所有的束缚核的NQM。我们计算的524个基态核的NQM与基于Weizsäcker-Skyrme（WS）核质量模型导出的核形变参数的实验数据相比是合理的。计算的NQM和实验数据之间的均方根偏差较小，表明从WS质量模型预测的变形参数是合理的。此外，161个未知的NQM与已知的自旋也预测与建议的公式。
The nuclear electric quadrupole moment (NQM) is one of the fundamental bulk properties of the nucleus with which nuclear deformations can be investigated. The number of measured NQMs is significantly less than that of known masses, and there is still no global NQM formula for all bound nuclei. In this paper, we propose an analytical formula, which includes the shell corrections and which is the function of the charge number, mass number, spin, charge radius, and nuclear deformation, for calculating the NQMs of all bound nuclei. Our calculated NQMs of 524 nuclei in their ground states are reasonable compared to the experimental data based on the nuclear deformation parameters derived from the Weizsäcker-Skyrme (WS) nuclear mass models. Smaller rms deviations between the calculated NQMs and experimental data indicate that the deformation parameters predicted from the WS mass models are reasonable. In addition, 161 unmeasured NQMs with known spins are also predicted with the proposed formula.